Y 0.08Sr 0.92Fe xTi 1-xO 3-δ perovskite for solid oxide fuel cell anodes

Jong Seol Yoon, Mi Young Yoon, Chan Kwak, Hee Jung Park, Sang Mok Lee, Kyu Hyoung Lee, Hae Jin Hwang

Research output: Contribution to journalArticle

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Abstract

A single phase perovskite Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.05, 0.1,0 0.20, 0.25, 0.40, and 0.50) was fabricated at 1400 °C in air by a solid state reaction method and its electrical conductivity and electrochemical properties as an anode were investigated as a function of the Fe content. Doping with Y for Sr allowed the SrFe xTi 1-xO 3-δ perovskite to be stable at 800 °C in a reducing atmosphere. At 900 °C, metallic Fe precipitated and the stability of the perovskite phase under a reducing atmosphere decreased as the Fe content increased. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.40) was greater than that of the x = 0.20 sample. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ was found to be 2 × 10 -1 Scm -1 at 800 °C in H 2. Sintering the Y 0.08Sr 0.92Fe xTi 1-xO 3-δ anode at 1200 °C was found to be optimum to obtain not only good interfacial adhesion, but also a fine grain structure. The Y 0.08Sr 0.92Fe 0.25Ti 0.75O 3-δ anode exhibited the lowest polarization resistance (0.7 and 1.8 Ωcm 2 at 800 and 700 °C).

Original languageEnglish
Pages (from-to)151-156
Number of pages6
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume177
Issue number2
DOIs
Publication statusPublished - 2012 Feb 15

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cell anodes
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Perovskite
Anodes
anodes
atmospheres
conductivity
Crystal microstructure
Solid state reactions
Electrochemical properties
sintering
adhesion
Sintering
Adhesion
Doping (additives)
Polarization
solid state
electrical resistivity
air

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Yoon, Jong Seol ; Yoon, Mi Young ; Kwak, Chan ; Park, Hee Jung ; Lee, Sang Mok ; Lee, Kyu Hyoung ; Hwang, Hae Jin. / Y 0.08Sr 0.92Fe xTi 1-xO 3-δ perovskite for solid oxide fuel cell anodes. In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 2012 ; Vol. 177, No. 2. pp. 151-156.
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abstract = "A single phase perovskite Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.05, 0.1,0 0.20, 0.25, 0.40, and 0.50) was fabricated at 1400 °C in air by a solid state reaction method and its electrical conductivity and electrochemical properties as an anode were investigated as a function of the Fe content. Doping with Y for Sr allowed the SrFe xTi 1-xO 3-δ perovskite to be stable at 800 °C in a reducing atmosphere. At 900 °C, metallic Fe precipitated and the stability of the perovskite phase under a reducing atmosphere decreased as the Fe content increased. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.40) was greater than that of the x = 0.20 sample. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ was found to be 2 × 10 -1 Scm -1 at 800 °C in H 2. Sintering the Y 0.08Sr 0.92Fe xTi 1-xO 3-δ anode at 1200 °C was found to be optimum to obtain not only good interfacial adhesion, but also a fine grain structure. The Y 0.08Sr 0.92Fe 0.25Ti 0.75O 3-δ anode exhibited the lowest polarization resistance (0.7 and 1.8 Ωcm 2 at 800 and 700 °C).",
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Y 0.08Sr 0.92Fe xTi 1-xO 3-δ perovskite for solid oxide fuel cell anodes. / Yoon, Jong Seol; Yoon, Mi Young; Kwak, Chan; Park, Hee Jung; Lee, Sang Mok; Lee, Kyu Hyoung; Hwang, Hae Jin.

In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 177, No. 2, 15.02.2012, p. 151-156.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Y 0.08Sr 0.92Fe xTi 1-xO 3-δ perovskite for solid oxide fuel cell anodes

AU - Yoon, Jong Seol

AU - Yoon, Mi Young

AU - Kwak, Chan

AU - Park, Hee Jung

AU - Lee, Sang Mok

AU - Lee, Kyu Hyoung

AU - Hwang, Hae Jin

PY - 2012/2/15

Y1 - 2012/2/15

N2 - A single phase perovskite Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.05, 0.1,0 0.20, 0.25, 0.40, and 0.50) was fabricated at 1400 °C in air by a solid state reaction method and its electrical conductivity and electrochemical properties as an anode were investigated as a function of the Fe content. Doping with Y for Sr allowed the SrFe xTi 1-xO 3-δ perovskite to be stable at 800 °C in a reducing atmosphere. At 900 °C, metallic Fe precipitated and the stability of the perovskite phase under a reducing atmosphere decreased as the Fe content increased. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.40) was greater than that of the x = 0.20 sample. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ was found to be 2 × 10 -1 Scm -1 at 800 °C in H 2. Sintering the Y 0.08Sr 0.92Fe xTi 1-xO 3-δ anode at 1200 °C was found to be optimum to obtain not only good interfacial adhesion, but also a fine grain structure. The Y 0.08Sr 0.92Fe 0.25Ti 0.75O 3-δ anode exhibited the lowest polarization resistance (0.7 and 1.8 Ωcm 2 at 800 and 700 °C).

AB - A single phase perovskite Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.05, 0.1,0 0.20, 0.25, 0.40, and 0.50) was fabricated at 1400 °C in air by a solid state reaction method and its electrical conductivity and electrochemical properties as an anode were investigated as a function of the Fe content. Doping with Y for Sr allowed the SrFe xTi 1-xO 3-δ perovskite to be stable at 800 °C in a reducing atmosphere. At 900 °C, metallic Fe precipitated and the stability of the perovskite phase under a reducing atmosphere decreased as the Fe content increased. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ (x = 0.40) was greater than that of the x = 0.20 sample. The conductivity of Y 0.08Sr 0.92Fe xTi 1-xO 3-δ was found to be 2 × 10 -1 Scm -1 at 800 °C in H 2. Sintering the Y 0.08Sr 0.92Fe xTi 1-xO 3-δ anode at 1200 °C was found to be optimum to obtain not only good interfacial adhesion, but also a fine grain structure. The Y 0.08Sr 0.92Fe 0.25Ti 0.75O 3-δ anode exhibited the lowest polarization resistance (0.7 and 1.8 Ωcm 2 at 800 and 700 °C).

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M3 - Article

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EP - 156

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

SN - 0921-5107

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